/* ==========================================================================
   PDP (Product Detail Page) Specific Styles
   ========================================================================== */

.pdp-layout {
  padding-top: 120px; /* Account for fixed header */
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--spacing-4xl);
}

/* Gallery Section */
.pdp-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

.pdp-gallery img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  background-color: var(--co-black-surface);
  cursor: zoom-in;
}

/* Details Section (Sticky) */
.pdp-info-wrapper {
  position: sticky;
  top: 100px;
}

.pdp-category {
  font-size: 0.9rem;
  color: var(--co-gray-muted);
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
}

.pdp-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
}

.pdp-price {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xl);
}

/* Size Selection */
.pdp-sizes-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}
.pdp-sizes-title {
  font-weight: 600;
}
.pdp-size-guide {
  color: var(--co-gray-muted);
  text-decoration: underline;
  font-size: 0.9rem;
  cursor: pointer;
}

.pdp-size-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  gap: 10px;
  margin-bottom: var(--spacing-xl);
}

.pdp-size-btn {
  border: 1px solid var(--co-black-surface-light);
  background: transparent;
  color: var(--co-white);
  padding: 12px 0;
  font-family: var(--font-heading);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.pdp-size-btn:hover {
  border-color: var(--co-gray-muted);
  background: var(--co-black-surface);
}

.pdp-size-btn.active {
  border-color: var(--co-white);
  background: var(--co-white);
  color: var(--co-black-deep);
  font-weight: 700;
}

.pdp-size-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  text-decoration: line-through;
}

/* Add to Cart Actions */
.pdp-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
}

.pdp-actions .btn {
  width: 100%;
}

/* Accordions (Details/Returns) */
.pdp-accordion-item {
  border-top: 1px solid var(--co-black-surface-light);
}
.pdp-accordion-item:last-child {
  border-bottom: 1px solid var(--co-black-surface-light);
}

.pdp-accordion-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) 0;
  color: var(--co-white);
  font-family: var(--font-heading);
  font-size: 1.2rem;
  text-transform: uppercase;
  font-weight: 600;
}

.pdp-accordion-icon {
  font-size: 1.5rem;
  font-weight: 300;
  transition: transform var(--transition-normal);
}
.pdp-accordion-item.active .pdp-accordion-icon {
  transform: rotate(45deg);
}

.pdp-accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  color: var(--co-gray-light);
}
.pdp-accordion-item.active .pdp-accordion-content {
  max-height: 500px; /* Arbitrary large number to allow content */
  padding-bottom: var(--spacing-lg);
}

@media (max-width: 992px) {
  .pdp-layout {
    grid-template-columns: 1fr;
  }
  .pdp-gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .pdp-actions {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100vw;
    background: var(--co-black-deep);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 1000;
    border-top: 1px solid var(--co-black-surface-light);
    margin: 0;
  }
}

/* ==========================================================================
   Advanced Gallery & Zoom (Vanilla JS)
   ========================================================================== */
.pdp-gallery-advanced {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.pdp-main-image {
  width: 100%;
  aspect-ratio: 4/5;
  background-color: var(--co-black-surface-light);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  cursor: zoom-in;
}

.pdp-main-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.2s ease-out; /* Smooth follow cursor */
  transform-origin: center center;
}

/* On hover, JS will apply scale(2.5) and dynamic transform-origin */
.pdp-main-image:hover img {
  transform: scale(2.5);
}

.pdp-thumbnails {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  padding-bottom: 5px;
}

.pdp-thumbnails img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 4px;
  cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.6;
  transition: all var(--transition-short);
}

.pdp-thumbnails img:hover {
  opacity: 1;
}

.pdp-thumbnails img.active {
  opacity: 1;
  border-color: var(--co-green-neon);
}

/* Scarcity Notice */
.scarcity-notice {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: #ff4d4f;
  margin-bottom: var(--spacing-md);
  animation: flash 2s infinite;
  font-weight: bold;
}
@keyframes flash {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Validation Error */
.size-error {
  color: #ff4d4f;
  font-size: 0.85rem;
  margin-top: 5px;
  display: none;
}
.size-error.active {
  display: block;
  animation: shakeX 0.4s;
}
@keyframes shakeX {
  0%, 100% {transform: translateX(0);}
  25% {transform: translateX(-5px);}
  75% {transform: translateX(5px);}
}